O2
SpO2 Monitor
Camera-based blood oxygen tracking
Join early access

Measure SpO2 and heart rate with the iPhone camera, then see whether people actually want it.

SpO2 Monitor is a wellness app for reflectance PPG measurement. The landing page keeps the ask simple: one email, one qualifier, and a direct line to the product for people who want to follow along.

30 secmeasurement flow with real-time feedback
1 formemail plus one qualifier above the fold
3 pagesprivacy, terms, and contact linked from launch

Join early access

By joining, you agree we may contact you about SpO2 Monitor and use your submission to evaluate product interest.

Why people might care

Instant feedback

The flow is short and visual so users can tell what is happening while their finger is on the camera.

Clear use case

The site frames the app as a wellness tool, not a vague health gadget, which makes the intent obvious.

Simple demand signal

One qualifier helps separate curiosity from real interest without asking people to fill out a survey.